Machine for forming armature-coils



E. A. HALBLEIB. l MAcHmf FOR FonMlNG ARM/TUBE cons.

2 SHEETS-SHEET i )Eigelb 1 25 '1" l' GD i 16 i 27 17 E 24 @D y QD 34bwk/31%".

Patented Feb.10,192o. I

E. A. HALBLEIB.

` MACHINE Fok' FQRMING' ARMATUHE cons.

, 'APPLICAIION FILED JULY 10,1915'. 1,330,317. Peeeneed Feb.10,1920.

2 SHEETS-SHEET 2.

UNiTED sTATEs PATENT oEEioE.

EDWARD A. HALB'LEIB, OE ROCHESTER, NEw YORK, AssIGNOR TO NORTH EAsTELECTRIC COMPANY, OE RoCHEsTER, NEW YORRQA CORPORATION OENEW YORK.-

MACHINE FOR' FORMING; ABMATURE-CQILTS.

To all whom t mag/concern: y Y

Be it known that I, EDWARD AgHALBLErB, acitizen of the United States,and lresident of Rochester, in the county of 'Monroe and State of NewYork, have'invented certain new and useful Improvements in Machines forForming Armature-Coils,of 4which the following is a specification. y Y il This invention 'relates to a machine "for forming the Vcoils by whicha ydrum-armature of an electric motor or Agenerator Vis wound, thesecoils being wound, taped, and formed so that they mayl be vapplied tothe armature by merely introducing them in the slots of the core. v

In the winding ofthe drum-armature a considerable amount f of space isoccupied, at each end of the armature, by the parts of the coils whichcross each other, and accordingly it is desirable, for the sakeL ofcompactness, that' these parts be fitted as closely as possibletogether(Vv For this reason'the coils, which'are of a rectangular form'in cross-section, are usually formed withA a partial twist in eachend-portion, this twist giving them suohfa Sform that the severaladjacent coils lwill nest closely togetherat the ends. One object oftherpresent. invention'is toproduceV a machinewhich Will form thetwistedend-portion ofthe coil with great accuracy, so thatthey will.nest as closely together as possible. Y .a In some drum-armatures theslots arenot I arranged parallelwith each other, but are arranged ataslight anglezto the aXis of the armature. In order tov suitably form -acoil for entrance into slots so arranged it is necessary that, the`longer yarms or sidemembers ofthe coil `be arranged-at anangle to eachother, and' another objectofY-the -inseourethis angularrelation-finasimple and accurate manner. Y f, *Other objectsv oftheinvention, and-the features "of 4construction f and arrangement by,which these'various objects are attained, will beset forthvhereinaften-in connection with-the description of' the illustrated em-:i bodiment ofthe invention; vg

In the accompanyingdrawmgsi- Figure 1 is ,a planview ofamachinefrembodying the present invention; f

-'Fig. 2 Vis a left-handsidefelevation the v machine;

vSpecification vof Letters Patent.v Application filed July 10, 1915.Serial No. 39,164.

Patented E'eb. 1o, 1920.

Fig. 3 is a Vfrontfelevation of the machine, showing the parts in theposition occupied at thel commencement of the coil-forming operation; Y.y

Fig. tis a partial vertical median sectlon of the machine, inV the4position shown in Fig. 3; y

Fig. 5 is a left-hand side-elevationof the machine, with certain partsshown in secv tion; and ,i

Fig. L6 is a perspective Viewv of a coil which has been formed .by themachine.

The invention is illustrated asl embodied in ay machine comprising astationary clamp 10 fixed on the base-plate 11 of the machine. Thestationary vclamp lcomprises a iXed jaw 12, anda movable jaw 13 whichslides between guides 14. The clamp is operated' by a hand-lever 15,having a cam-surface 16 which works kagainst the outerv end of theclamp-jaw. A spring 17, cooperating with a pin 18-which projectsdownwardly from the jaw,.acts to open the clamp when the hand-leverisswung to the position of Figs. Y

1 and 2. Y f The stationary clamp constitutes means for holding oneofthe side-members, A, of

the coil, and theother side-member B is en-` gaged. and moved by amovable clamp For this purpose ia yoke 19 is formed integral with twoarms 20, which areA pivoted on v ins 21turning in bearing-blocks 22 onthe aseplate 11. The .izndfjaw 23 vofthe clamp is integral with theyokel19, while a movablejawv24 slides between guides 25 on the yoke, andis operated by al hand-lever26 provided. withA a cam-surface 27 the.lever being pivoted on the" yoke. Thev jaw 24: is

pose itis arranged loosely inthe guides 25,

andprovided with a beveled surface 28. A

retracted by a spring 32y arranged lin the I bar 29, 'fixed to the varms20, carries beveled bearing-blocks adjustable by means of screws31,7these blocks cooperating with the beveled Isurface 28. Coiledsprings 33, mounted in lsockets in' the yoke, tend .to press the jaw 24away from the yoke, as sh'own in Fig 2, but when the jaw advanced upontheyoke by means ofthe handlever 26 the action of the beveled surfaceagainst the bearing-blocks causes the jaw to be moved toward the yoke.

The yoke is swung about the pivots 21 by means of a handle 34, and whenthe coil is first introduced in the clamps this handle is held Vinvertical position, with the movable clamp'directly above the stationaryclamp, so that the two side-members of the coil, which are then paralleland comparatively close-tov each other, maybe gripped by the clamps. Thehandle 34: is then swung outwardly and downwardly, thus pulling theside-member B away from the member A, and atthe same time rotating itthrough an angle of V90". rlhis swinging movement of the yoke isarrested and limited by adjust` able stop-screws 36` on the base-plate11.

Incidentally to the relative movement, just described, of theAside-membersof the coil, the end-members of the coil are drawn out andtwisted, and it hasbeen found that the required form may be imparted tothese end-members more readily -by giving them alpreliminary downwardbend, as shown in Fig. 3. Accordingly, the clamp-jaw 24 *is providedwith lingers 35, which extend laterally so aste engage and bend the endmembers as shownin Fig. 3.

It has been found that the twist in the end-members which resultsnaturally from the relative movements of. the side-members 1 does not,ygive the form which is best adapted to permit the .end-members to'lieclose together when the coils are placed upon an armature. Accordingly,means are provided for controlling rvthe twisting action, these meansbeing in the form of abutments adapted tofengage the end-members onopposite sides. As show-n particularly in Fig. 1, Vthese abutmentscomprise rounded pins 37. and 38,'between which each end-member ofthe`coil is seated when the. coil is placed onfthe` clamps. Each pair ofpins is mount-y ed in an arm 39, fixed to a shaftyi() whichmovesfloosely Vin a perforation in the clampblock 10, the shafts beingfree both to turn and to slide. A springV 111 coiled about each shaft 40and xedat its ends, respectively, toctheclamp V1() and the arm 39, actsbothv to force the shaft 'outwardly and to rock it to :theposition ofFig. 1. The abutments aremounted movably, as just.l described, in order'that they may follow ythe movements of ytheend-members of-thecoil whenthese. members are fbeing stretched and straightened. For the sainepurpose each arm-39 is provided, below its shaft 40with a beveled lowerextremity or finger 4-2, as shown in Fig. 1, to coperate with a beveledsurface on acam 43. The cam is integral with a block 44, which isarranged to swing on a pivot 45. Themovements of the block and cam lare.controlled by a stop-pin ida-nda bers ofgthe coil and maintain theabutment-s in engagement with the coil` Just before the completion ofthemovement of the movableclamp, however, the arms 39 reach a position in4'which the extremities move past and disengage the cams 43,' @whereuponthefsprings i1-force the shafts -10- outwardly, thus 'disengagingU-thelabutments from ythe coil, 'and as soon as the disengagement occurs thesprings rockthe'armsfback tovtheir original position. Thisgreturnmovement is arr-,estedby' the engagementfof the extremities i-2 withstop-pins 48 projecting upwardly from l,the basell. Y

e The engagement of the end-members vof the coil bythe abutments 87 and38 causes the twist of the end-members y.to be lmost pronounced 4at `the'middle vof these endmembers, and thus produces a form which has beenfound most ldesirable forcompactness and arrangement ,l of the windings.

rlhe abutments havethe further advantage i ,I

which the sidemember B y is1moved ,longi-v tudinally for a shortdistancev with respect tothe member A. For this purposethe`-machi-ne'isprovided with a rocking member 50 mounted on apivotfstud 5,3011 thefront of the clamp-block 10. One.` extremityl of the member 50 has abeveled inner surface adapted to engagethe outensurfaceofthe end-memberC ofthe coil, while the beveled outer surface of the other :extremityvlQis adapted-to engage ythe inner surface ofthe end-memberiDoffthe1 coil.-The member 50 is actuated yby a handlever54;, (omitted from Fig. 5)anditactstopress the end-Y member-C upwardly @indio-the' left (as'seenin Figv), and the endanember Ddownwardly and tothe left. Theextent ofthis movementV is 'determined iby t an adjustable stop-screw 56 whichcoperates with vthe hand-lever V54;, and the vlever is returned tonormal position bya spring 55.'

The operation of the machine as .aV-.whole is,` as :follows :vVVith Ytheparts Vin the yposition Vof Fig. 1, the operatorV places a co1l ,wyvithits members lying in a vertical plane, into position between theabutments 37 and 38, with its lower side-member lying between the jawsof the stationary clamp. He then swings the hand-lever 15 to cause thestationary-clamp vto grip the coils. The operator then swings thehand-lever 34: upwardly and rearwardly to a vertical position, thusbringn ing the movable clamp into engagement with the upper side-memberof the coil, and then closes the movable cla-mp upon the coil by meansof the hand-lever 26'. The operator then swings the hand-lever'forwardlyand downwardly, and during therst part of this movement the end-engagingabutments coperate with the coil, while they become disengaged therefromand return to the normal position before the completion of the movement.The operator then opens the movable clamp so as to release thesidemember of the coil which is held thereby, and then depresses thehand-lever 54. This completes the operation upon the coil, which is thenreleased from the stationary clamp and removed from the machine; Theform imparted to the coil is shown in Fig. 6.

My invention is not limited to the embodiment therof hereinbeforedescribed and illustrated in the accompanying drawings, but it may beembodied in various other forms within the nature of the invention asitis deiined in the following claims.

I claim f l. A coil-forming machine having, in com bination, means forpulling apart and relatively rotating the side-members of a coil;end-forming means for simultaneously engaging the end-members of thecoil and controlling the form imparted to them; and means for moving theend-forming means inwardly as the end-members of the coil arestraightened.

2. A coil-forming machine having, in combination, means for pullingapart and relatively rotating the side-members of a coil; abutments forengaging the end-members of the coil on opposite sides, to control thetwisting thereof; supports, for said abutments, arranged to swing aboutan aXis close to the axis of movement of the first mentioned means; andcams for movingA said supports inwardly during such swinging movement tocause them to follow and remain in engagement with the end-members.

8. A coil-forming machine having, in combination: means for gripping andholding one lof the parallelside-members of a coil, Y

means for acting upon the other portions of the coil so held, toseparate the side-members and bring the longitudinal aXes of theside-members out of their original common plane and means to bring saidaXes into an angular relation. y

4f. A coil-forming machine having, in combination, means for grippingand holding one side-member only of a coil, while the other 'side memberis left free; and means for engaging the end-members of the coil so heldand pressing them in opposite directions to move the other side-memberboth longitudinally and angularly with respect toV the first-mentionedside-member.

5fr A coil-forming machine having, in combination, means for drawing around-ended coil into approximately rectangular` form with' twistedend-members; and means for bending the coil thereafter into the form ofa twisted rhomboid.

EDWARD A; HALBLEIB.

